This document discusses destructive lesions of the palate that can arise from various pathological conditions. It begins by describing the anatomy and histology of the palate. It then examines early and late presentations of palatal perforations and the clinical assessment, diagnosis, and classification of different types. Specific conditions that can cause palatal perforations are explored in depth, including cocaine abuse, syphilis, tuberculosis, leprosy, mucormycosis, actinomycosis, and various other infectious, inflammatory, and neoplastic etiologies. The management of many of these conditions is also reviewed. In conclusion, the document emphasizes the importance of a thorough history and laboratory workup to establish an accurate diagnosis for palatal
Diseases of salivary glands is a very important topic in the final MBBS/ MS ENT exam.
Dr. Krishna Koirala has described the salivary gland diseases in a lucid way in this presentation.
Diseases of salivary glands is a very important topic in the final MBBS/ MS ENT exam.
Dr. Krishna Koirala has described the salivary gland diseases in a lucid way in this presentation.
Inflammation of the mucosa of sinuses associated with inflammation of the nasal mucosa is called rhinosinusitis (RS).
CLASSIFICATION:
• Acute RS: Symptoms lasting for less than 4 weeks with complete resolution.
• Subacute RS: Duration 4-12 weeks.
• Chronic RS: Duration ~ 12 weeks.
• Recurrent RS: Four or more episodes of RS per year; each lasting for 7-10 days or more with complete resolution in between the episodes.
• Nasal obstruction.
• Nasal discharge/congestion, anterior, or posterior in the form of postnasal drip.
• Facial pain or pressure.
• Alteration in the sense of smell, hyposmia or anosmia.
• Other symptoms include cough, fever, halitosis, fatigue, dental pain, pharyngitis, headache or ear fullness.
Differential diagnosis of haziness of maxillary sinusNarmathaN2
Differential diagnosis of haziness of maxillary sinus fromTextbook of Dental and Maxillofacial Radiology, Freny R Karjodkar,3rd edition
Principles and interpretion of oral radiology,white and pharoah
Integrating Ayurveda into Parkinson’s Management: A Holistic ApproachAyurveda ForAll
Explore the benefits of combining Ayurveda with conventional Parkinson's treatments. Learn how a holistic approach can manage symptoms, enhance well-being, and balance body energies. Discover the steps to safely integrate Ayurvedic practices into your Parkinson’s care plan, including expert guidance on diet, herbal remedies, and lifestyle modifications.
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
2. INTRODUCTION
• The palate is an integral part of the oral cavity constituting
various tissue types that give rise to different types of
pathological conditions.
• Palatal perforation can be defined as a communication between
the nasal cavities and the oral cavity.
• Can pose a difficult diagnostic dilemma for the clinician
3. • It forms both the roof of the mouth and the floor of the nasal
cavity
• Reflecting this, the superior and inferior palatal surfaces have
different mucosae:
• Superior aspect of palate (nasal cavity) – respiratory
epithelium.
• Inferior aspect of palate (oral cavity) – oral mucosa,
populated by secretory salivary glands
4. HISTOLOGY
• Keratinizing stratified squamous epithelium - ortho- or
parakeratinized - explain the decreased incidence of
squamous cell carcinoma in the hard palate as compared to
other areas of the oral cavity
5. EARLY PRESENTATION
• Pain and discomfort
• Ulceration, foul odour and bleeding
Late presentation
• Extension superiorly into the maxillary antrum and nasal cavity
• Nasal obstruction
• Posterior extension into the structures of the oropharynx, into
pterygoid muscles
6. CLINICAL ASSESSMENT
• History and thorough head and neck exam
• Lymph nodes in neck
• Middle ear effusion
• Extension into nasopharynx
• Absent trigeminal blink reflex or palatal hypaesthesia
8. CLASSIFICATION
Developmental Cleft palate
Drug related Narcotics (cocaine, heroin etc.,)
Trauma Iatrogenic, Thermal
Infection Tertiary Syphilis, Tuberculosis, Leprosy,
Typhoid, Mucormycosis, Actinomycosis,
Aspergillosis, Paracoccidioidomycosis,
Histoplasmosis, Naso-Oral Blastomycosis,
Leishmaniasis, Diphtheria, Rhinoscleroderma
PATIL SR (2016) PROPOSED CLASSIFICATION FOR THE PALATAL PERFORATION” (DR. SANTOSH PATIL CLASSIFICATION). J INTERDISCIPL MED
DENT SCI 4: 192
9. CONTD……
Neoplasia Lymphoma, Carcinoma, Melanoma, Acute
Lymphoblastic Leukemia
Collagen
vascular disease
Wegener's granulomatosis, Systemic lupus
erythematous
Idiopathic Midline lethal granuloma
Granulomatous
disease
Sarcoidosis, Crohns’s disease
Other Rhinoliths
PATIL SR (2016) PROPOSED CLASSIFICATION FOR THE PALATAL PERFORATION” (DR. SANTOSH PATIL CLASSIFICATION). J INTERDISCIPL MED
DENT SCI 4: 192
10. COCAINE-INDUCED PALATAL PERFORATION
• Coca leaves (erythroxylon coca), the source of cocaine
• Purified chemical, cocaine hydrochloride- isolated from the plant
• Local complications
• Chronic rhinitis
• Sinusitis
• Epistaxis
• Ossification or necrosis of the
nasal septum
• palatal perforation
• Cocaine - potent vasoconstrictor- ischemia - necrosis- ulceration
11. PALATAL PERFORATIONS SECONDARY TO INHALED COCAINE ABUSE. PRESENTATION OF FIVE CASES
Vasoconstrictive and caustic effect of the drug
direct irritation
ischemia of the nasal and palatine mucosa
secondary to maxillary bone destruction
creation of an oronasal perforation
12. Management
• Antibiotics, analgesics
• Prostheses (obturators)
• Surgical reconstructions of the defect
• Nasal septal button
INSERTION OF NASAL SEPTAL BUTTON IN THE TREATMENT OF SEPTAL PERFORATION : A CASE REPORT - SEMANTIC SCHOLAR
13. SYPHILIS
• Syphilis - sexually transmitted infection- bacterium Treponema
pallidum
• Primary stage - single chancre - a firm, painless, non-itchy skin
ulceration but there may be multiple sores
• Secondary syphilis - diffuse rash - palms of the hands and soles of
the feet , sores in the mouth or vagina
14. • In latent syphilis - few or no symptoms
• In tertiary syphilis- gummas (soft, non-cancerous growths)
neurological problems, or heart symptoms
• Gummata - ulcerated nodular granulomatous lesions - causing
localised destruction and perforation of the palate and
lobulated enlargement and surface irregularities of the tongue
16. MANAGEMENT
Recommended Regimen for Adults
• Benzathine penicillin G 2.4 million units IM in a single dose
• Infants and Children - 50,000 units/kg IM - 2.4 MU
Penicillin Allergy
• Doxycycline 100 mg orally bid - 14 days
• Tetracycline (500 mg four times daily for 14 days)
Tertiary Syphilis
• Benzathine penicillin G 7.2 million units total, 3 doses of
2.4 million units IM each at 1-week intervals
• June 4, 2015Content source: Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and
Prevention
17. TUBERCULOSIS
• Tuberculosis (TB) - caused by Mycobacterium tuberculosis
• Pulmonary TB - most common form
• Both primary and secondary types of TB - cause lesion in the
oral cavity.
• In secondary TB, lesions of the oral cavity may accompany
lesions in the pharynx, lungs, lymph nodes and skin
PRIMARY TUBERCULOSIS OF PALATE
18. • Oral TB is rarely seen
• Few factors that attribute to relative resistance of oral cavity TB
are
• protection by the oral saliva,
• presence of saprophytes,
• resistance of the striated muscles to bacterial invasion
• thickness of the protective epithelial covering
19. • The most common site for oral TB - tongue
• Others - soft palate, hard palate, lip, cheek, tonsils,
gingiva, floor of the mouth, uvula, and alveolar mucosa.
• Manifestation of oral TB is an ulcerative lesion of the
mucosa.
20. opalescent vesicle or a nodule
caseation necrosis
ulcer
• A typical TB lesion - ragged undermined edges, minimal
induration and often with a yellowish apple jelly like
granular base - ulcerate leaving radiating scars.
PRIMARY TUBERCULOSIS OF PALATE
21. DIAGNOSIS
• Can mimic a malignant neoplasm
• Primary lesions of TB manifest in the oral cavity
as non-healing chronic ulcers.
• Chest radiograph and tissue biopsy for histological
studies
23. LEPROSY
• Leprosy is a chronic infectious disease - Mycobacterium
leprae
• Two forms - lepromatous and tuberculoid forms
• Mainly it affects skin, peripheral nerves and nasal mucosa
• It can also affect the oral cavity
24. • Oral lesions are more common in lepromatous type of
leprosy.
• In the oral cavity, it can involve the palate, buccal
mucosa, tongue
• M. leprae prefer to colonize the cooler parts of the body
• The commonest site of oral cavity - hard palate >soft
palate, labial and buccal maxillary gingiva, tongue, lips,
labial mandibular gingiva > buccal mucosa.
25. palate
ulceration
perforation
oro-nasal fistula
• Erythema nodosum leprosum is an important but rare cause of the
destruction of the hard and soft palate
• Palatal nodulo ulcerative lesions of leprosy may mimic squamous
cell carcinoma
26.
27.
28.
29. MUCORMYCOSIS
COTRAN, KUMAR, ROBBINS ROBBINS' PATHOLOGIC BASIS OF DISEASE, (4'° SUB ED.) WB SAUNDERS AND CO, PHILADELPHIA, 356,1989
• Opportunistic fungal infection - caused by normally saprobic
organism of the class Zygomycetes
• Invasion of surrounding tissue - necrotizing ulceration of palate
with a blackish slough and exposure of bone
30. • The 5 major clinical forms are as follows:
1. Rhinocerebral
2. Pulmonary
3. Abdominal pelvic and gastrointestinal
4. cutaneous
5. Disseminated forms
• Rhinocerebral mucormycosis – typically commences in
the nasal cavity or paranasal sinuses – invade the palate
(black necrotic ulceration)
32. Lab investigation:
• Direct morphologic identification of mycotic elements and
recovery of Mucorales organisms in culture from specimens
• Histologic examination - periodic acid-Schiff and Gomori
methanamine silver stains
33.
34. ACTINOMYCOSIS
• Slowly progressing infection caused by anaerobic bacteria
Actinomyces
• Three distinct clinical forms
• Cervicofacial
• abdominopelvic
• Thoracopulmonary
• Destroy local tissue in a highly vascularised and therefore
aerobic region and replaces it with granulation tissue.
36. WEGENER’S GRANULOMATOSIS
• Rare chronic granulomatous disease
• Immunological
• C/F : Necrotizing granulomatous lesions of the respiratory
tract ,generalized focal necrotizing vasculitis and necrotizing
glomerulonephritis.
37.
38.
39. • Oral manifestation : solitary or multiple irregular ulcers,
surrounded by an inflammatory zone
• Tongue, palate ,buccal mucosa and gingiva.
• Lab investigation: c-ANCA –anti neutrophil cytoplasm test
42. SARCOIDOSIS
• Systemic granulomatous disease
• Non caesating granuloma – characteristic lesion.
• Oral manifestation: multiple, nodular, painless ulceration of the
gingiva, buccal mucosa, tongue, lips and palate
43.
44.
45. MIDLINE LETHAL GRANULOMA
• Lethal midline granuloma (LMG) is an historical term for
a condition in which necrotic and highly destructive lesions
develop progressively in the middle of the face, principally
the nose and palate
46. • Manifestation of three or four different diseases:
• the well-characterized disease of granulomatosis with
polyangiitis
• the ill-defined disorders of polymorphic reticulosis
• mid-line malignant reticulosis,
• and an incompletely defined form of non-Hodkgins
disease malignant lymphoma
48. NOMA
• Noma is a rapidly progressive, polymicrobial, often
gangrenous infection of the mouth or genitals.
49. • The mucous membranes of the mouth develop ulcers - rapid,
painless tissue degeneration - degrade tissues of the bones in the
face
• Bacterial cause:
Fusobacterium necrophorum and Prevotella intermedia (such
as Borrelia vincentii, Porphyromonas gingivalis, Tannerella
forsythia, Treponema denticola, Staphylococcus aureus, and
certain species of nonhemolytic Streptococcs).
50. NECROTISING SIALOMETAPLASIA
• Uncommon locally destructive inflammatory condition of the
salivary glands
• Cause: unknown
• Result of ischemia of the salivary tissue
that leads to local infarction.
51.
52. • Benign, ulcerative lesion, usually located towards the back
of the hard palate.
• It is thought to be caused by ischemic necrosis (death of
tissue due to lack of blood supply) of minor salivary
glands in response to trauma.
53. CLINICAL FEATURES
• Most frequently develops in palatal salivary glands
• Hard palate> soft palate
• 2/3 of palatal cases are unilateral ,with the rest being
bilateral or midline in location
• Appears initially as non- ulcerated swelling often
associated with pain or parasthesia with crater like ulcer
<1cm >5cm in diameter appearing within 2-3 weeks.
55. PHOSSY JAW
• Phossy jaw, formally known as phosphorus necrosis of the
jaw
• an occupational disease affecting those who worked with white
phosphorus
• white phosphorus vapour- destroys the bones of the jaw
56. Treatment:
• Topical antimicrobials
• Conservative debridement of sequestra
• Surgical removal of the afflicted jaw bones
Diagnosis:
• In radiographs, the sequestra present as a typical worm-eaten
appearance. Sequestra appear osteoporotic and decalcified.
Separation of the dead bone from the surrounding bone appears
clearly demarcated in the radiographs
57. TUMORS OF THE PALATE
• Palate - most common site for minor gland neoplasms.
• Cancer of the soft palate - 2% of head and neck mucosal
malignancies.
• Hard palate cancers are squamous cell carcinomas (SCCs)
58. • Non squamous cell cancers - minor salivary gland cancers,
sarcomas, and melanomas.
• Benign tumors - pleomorphic adenomas
• Malignant tumors - mucoepidermoid carcinoma, adenoid cystic
carcinoma, and polymorphous low-grade adenocarcinoma.
59. BENIGN PLEOMORPHIC ADENOMA
• Most common benign mixed tumor composed of epithelial
and myoepithelial cells arranged with various
morphological patterns, demarcated from surrounding
tissues by fibrous capsule.
61. ADENOID CYSTIC CARCINOMA
• Accounts for <1% of all head and neck malignancies
• 4-10% of all salivary gland tumors
• commonest malignant tumor of the minor salivary glands
• Intraorally 50% - occur on the palate
62. POLYMORPHOUS LOW-GRADE ADENOCARCINOMA
• Malignant epithelial tumor
• Characterized by cytological uniformity, morphological
diversity, an infiltrative growth pattern and low metastatic
potential
• Most common location - palate
• More frequent in women
63. CONCLUSION:
It is well understood that the palatal perforation can pose a
difficult diagnostic dilemma for the clinician. The perforation
may present with the common characteristics and may be
indistinguishable clinically. Emphasis is placed on the
importance of obtaining a thorough and comprehensive
history and collecting relevant laboratory information.
64. REFERENCES
1.Textbook of oral medicine ,burkett -11 th edition
2.Oral pathology – shafer’s
3.Cotran, kumar, robbins pathologic basis of disease, (4'° sub
ed.) WB saunders and co, philadelphia, 356,1989
4.June 4, 2015content source: division of STD
prevention, national center for HIV/AIDS, viral hepatitis, STD,
and TB prevention, centers for disease control and prevention